Power Electronics

Industry's Smallest 8A Integrated, Synchronous Buck Regulator

Fairchild Semiconductor enables power designers to achieve higher output current and high efficiency using less PCB space with its TinyBuckTM DC-DC regulator. The FAN2108 is an 8A, fully integrated, synchronous buck converter that drives efficiency over a wide input voltage range (3V to 24V) for applications such as set-top boxes, graphic cards, point of load (POL) and industrial power network devices. Alternate solutions achieve efficiency by using additional discrete components or require significant board space – lengthening design time and increasing the size of the end application. The TinyBuck™ integrates the controller, MOSFETs, and boot diode into a slim 5mm x 6mm MLP footprint - making it the industry's smallest 8A solution. The FAN2108 has been designed with Fairchild's PowerTrench® MOSFET process with extremely low Figure of Merit (FOM) to reduce conduction and switching losses. At 12V input and 8A load current, the FAN2108 delivers 92 percent efficiency at 3.3V output and 87 percent efficiency at 1.8V output. At 5V input and 3.3V output, this device achieves a peak efficiency of 95 percent.

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